6990241520 has 80 divisors (see below), whose sum is σ = 16462919520. Its totient is φ = 2760056832.

The previous prime is 6990241513. The next prime is 6990241523. The reversal of 6990241520 is 251420996.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6990241523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2677976 + ... + 2680584.

It is an arithmetic number, because the mean of its divisors is an integer number (205786494).

Almost surely, 2^6990241520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6990241520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8231459760).

6990241520 is an abundant number, since it is smaller than the sum of its proper divisors (9472678000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6990241520 is a wasteful number, since it uses less digits than its factorization.

6990241520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3042 (or 3036 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 6990241520 is about 83607.6642419820. The cubic root of 6990241520 is about 1912.0418503004.

The spelling of 6990241520 in words is "six billion, nine hundred ninety million, two hundred forty-one thousand, five hundred twenty".